1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0c247de3b52ddbb5dbe739ea61279e775ff10200c65fad8a9c9244d611a4a0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bab7718-fbaa-4096-b7b9-af44a6d867d1.json and https://artists.proofprofile.net/proofs/artist/7bab7718-fbaa-4096-b7b9-af44a6d867d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03542279d17658d3f0a3320a15b9c0d5f2e6ced68b83813962bca720f0273402. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f4a893a9b2559a551cdd043811594c939cd557284e325cfb09511db688bbcf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce509bf995c0e59575d859b9dd5f118fab61de1738fb33eb88fccea94269af6. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c84b622e9daad4fe9894715e6036564f93160367542345cf05e1e49cd345b4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a28953fa1ada4bfa04e4e7651b966d876a4a1aa3da10c1b59e677f56573ade0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34bed6a66655fe5205161fcc08c62038ba9dd9625d0933abd5b3016ab0a909. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151600475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52f47c1de979783aeac86a58e02502550bc7bfe3b30ec96e35f56586670d7aa. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151800037.
Te Quedas o Te Vas (feat. Ghetto Kids) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d7de62bafc1c9285c66af3774135580cfb160e864dcca9039f1fe4d203a83a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:51:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51acf5edb1c17493cca97a8bac3f88a1093edaa2ea9ee64ae6ce0d1a5697361b. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8110dc221b254f1cd2229137364123b4f14c1c7197dc1a84087ebd6937b92b2f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151700730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaed054c1f047a9fe1983f2d0aecf2eaa3777ec1fb75aa2b1db2f11b1d2e257. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8aa18bb22ce0418338cfb95a7e52e67ce5636a8b0da2d345cd80f9c551b13f4. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:37:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF151800233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f25e245ad032ccdd0afeabad5bcd381220b1fbbbafb3c82a6d1406f568df054. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ41940128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade2bdb139592ee4821939af988b722e9c77145db3605656ee7ee80584d0dd9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB2173379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b9f7aa5957d456a55190582c04ba3fd43ff62cd87e1eec319630a9e981d7c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2194408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b17819e08a4366766a01573f1cf30a9fbbc9d8c00d5067ee7942567021b5c4c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2112916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3a8f31d0a4050b25b631d4fefb7a0cf61f0dfe3b7393fc0f4b70f96bf8a64a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2560951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5f3cb6fe3f26019e126d3d6bea72e4219949d5fdad348ecdf7942c36fcb3bb. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2515267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c630a328adfc41d46d7302d2d1db169804ac755a3cb29de1832ad14a23da0f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2557495.